Fan.



PATENTED MAY 14, 1907.

0. SELG.

FAN.

APPLIOATIOH FILED JAN.31.1907.

8 worm W04; 0850 756'! $511 aHoM m 1:1

o'r'ro SELG, OF NEW YORK, N. Y.

FAN.

Specification of Letters Patent.

Patented May 14, 1907.

Application filed January 31, 1907- Sarlal No. 354,979.

To all whom it may concern: Be it known that I, Orro SELG, a citizen of the United States, residin at New York city, Brookl county of 'ngs, State of New York, il a ve invented new and useful Improvements in Fans, of which the followin is a specification.

his invention relates to a fan provided with improved means for so deflecting and dividin the air current, that it is evenly distributed over a lar e area, while objectionable draft is avoide In the accompanying drawing: Figure 1 is a side view of a fan provided with my imrovcment, showing the screen in section; ig. 2 is a detail rear view of part of the screen; Fig. 3 a section on line 3-3, Fig. 2; Fig. 4 a section on line 4-4, Fi 2; Fig. 5 a front view of a modification o the screen; Fig. 6 a cross sectionthereof; Fig. 7 a front view of a further modification of the screen, and Fig. 8 a cross section of Fi 7.

The shaft 10 of the fan, carrying the blades 11, turns in the frame 12, and is preferably driven by electricity in the usual manner. In front of the blades 11, there is. arranged a screen or air distributer 13 mounted on a ring 14, which is attached to frame 12 by arms 15.

Screen 13 is corrugated, being composed of a series of rid es 16 and intervening furrows 17, the ridges eing made in the form of concentric rings. The sides 18 of the rid es are inclined to converge from base towar crest, the latter bein flattened. Within each furrow there are formed a number of openings 19, shown to be made in the form of slots, and similar openings are formed in the crest of ridges 16. The screen being preferably struck up from sheet metal, the fins or projections 20, formed at the sides of the openin s, are bent at various a les to serve as a ditional air distributors, a joining projections extending preferably in opposite directions, (Figs. 3 and 4). If desired, a loosely woven textile covering 21 may be applied to either one or both sides of the screen, so as to extend over the same.

The air currents induced by the fan will, on striking the inner inclined sides of the corrugations, be so deflected as to pass through the outermost openings, not in a more or less axial direction, but at an infin ite number of different angles. In othe words, the more or less cylindrical body 0 the air current is converted into a more oi less coniform body, thus spreading over an increased area. Furthermore, as these de flected air currents meet the more or less axi ally flowing currents passing through the in ner perforations, a violent agitation of the ai is produced. In this way the air is so dissem inated, that a substantially uniform cooling effect 1s obtained, and objectionable draft i: avoided.

The form and construction of the screer may be somewhat varied, without de arting from the spirit of my invention. T ius, i1 Fig. 1, the screen is made of semi-oval form in cross section with concentric ridges. 11 Figs. 5 and 6, it is made coniform in cross sec tion with concentric ridges, while in Figs. 7 and 8, it is made straight in cross section witl straight ridges.

I claim:

1. A fan provided with a corrugated ai: distributing screen, substantially as specified 2. A fan provided with a corrugated ai distributing screen having 0 enjngs in its fur .rows, substantially as specified.

3. A fan provided with a corrugated ai: distributing screen having openings in it; ridges substantially as specified.

4. A fan provided with a corrugated ai distributin screen havingo eningsmits fur rows and ridges, substantia ly as s ecified.

5. A fan provided with an air distributing screen having 0 enings, and rejections a the sides of sue openings, su stantially m specified.

6. A fan provided with a corrugated ai distributing screen having 0 enings, and pro jections at the sides of suc 1 openings, sub stantiall as specified.

Signe by me at New York city, (Man hatt7an,) N. Y., this 30th day of January OTTO SELG.

Witnesses:

WILLIAM SCHULZ, FRANK v. BRIESEN. 

